/*
 * Copyright 2021 Expedia, Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.qinghzu.graphqlbff.query

import com.expediagroup.graphql.server.operations.Query
import graphql.schema.DataFetchingEnvironment
import org.springframework.stereotype.Component

@Component
class EnvironmentQuery : Query {
    fun nestedEnvironment(value: Int) = NestedNode(value)
}

data class NestedNode(
    val value: Int,
    val parentValue: Int? = null
) {
    fun nested(environment: DataFetchingEnvironment, value: Int): NestedNode {
        val parentValue: Int? = if (environment.executionStepInfo.hasParent()) {
            environment.executionStepInfo.parent.getArgument("value")
        } else {
            null
        }

        return NestedNode(value, parentValue)
    }
}
